How to add Hover text for Field "What is the start date of this relationship?"

Summary

How to add Hover text for the field on ESS Page

Content

Hi Everyone,

Requirement - Want to add the text box for the field "What is the start date of the relationship?” Under ME>Benefits>People to Cover>New Contact page.

I have attached the screenshot with highlights that I am looking for it to add on ESS Page.

Is there any way to add this text box on New Contact page or can we do this Using Hover text, if yes then how to add this Hover text.

Version

20D